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To interface with a remote machine running SSH through SAS/CONNECT,
follow the steps below.

   1.) Start a SAS Spawner on the remote server with the options:
       -inheritance (which is installed by default) and
       -service yyyy (where yyyy is the spawner port)


       For example, UNIX Spawner program:

       /utilities/bin/sastcpd -service 4321 -inheritance

   2.) Open a SSH tunnel from the client machine to the server machine
       by submitting the following code outside of SAS:


       ssh -N -L xxxx:localhost:4321 the.unix.server


       /* where xxxx is a local random unused port */


       /* where the.unix.server is the alias hostname or IP address of
          the remote unix machine running SSH */

       ssh -N -L 4444:localhost:4321 the.unix.server

   3.) A connection must be made to the random local port (xxxx),
       defined in step 2, on the local host.  To establish this
       connection, a SAS/CONNECT SIGNON is used.  This SIGNON will
       establish a SAS/CONNECT conversation from the local host to the
       local port number.  The local port number is then forwarded to
       the remote host via SSH.  Submit the following code from within
       SAS on the client:

          %let server=localhost 4444;
          options remote=server;
          filename rlink '......./xxxxxxx.scr';
          signon;

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